Differential behavior of cytotoxic effector cells against HLA antigens in strong genetic linkage disequilibrium

✍ Scribed by Se Jong Kim; Frank T. Christiansen; Donald M. Silver; Bo Dupont

• Book ID: 104741188
• Publisher: Springer-Verlag
• Year: 1981
• Tongue: English
• Weight: 785 KB
• Volume: 13
• Category: Article
• ISSN: 0093-7711
• DOI: 10.1007/bf00364495

✦ Synopsis

Five sets of cytotoxic effector cells were generated, using haploidentical, first degree relatives in five different families, against the HLA-A3; B7 serological determinants combined with different DR antigens. When tested against a panel of cells bearing combinations of the HLA-A, -B and -DR antigens it was shown that the HLA-B7 antigen was as strong a CML target determinant alone as it was in the presence of HLA-A3. The strength of the HLA-A3 antigen as target determinant varied. With effector cells primed to the HLA-A3; B7; DR2 haplotype, the A3 antigen alone behaved as a weak target determinant. When the same target cells were tested with the effector cells generated against HLA-A3; B7 without DR2, the A3 antigen behaved as a strong target determinant. A number of target cells lacking the serologically detectable HLA determinants present on the sensitizing HLA haplotype were identified as being killed by specific effector cells. These data suggest either a number of new CML target determinants controlled by different loci or the presence of a single, new locus with multiple alleles controlling CML targets.